This page contains complete schematics and block diagrams documenting the system architecture, component interconnections, and design structure.
System Block Diagram
TODO: Add complete system block diagram
Please add a high-level system block diagram showing: - Arduino with BNO085 sensor connection - FPGA with dual SPI slave interfaces - STM32 MCU with SPI master interface - Data flow arrows indicating direction - Key signals (SPI lines, I2C lines, power, ground)
Recommended Image Specifications: - Format: PNG or SVG - Size: 1200px width minimum - Location: Save to Images/system-block-diagram.png - Include labels for all components and connections
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{width="100%" alt="Complete system block diagram showing Arduino, FPGA, and MCU connections"}FPGA Block Diagram
TODO: Add FPGA internal block diagram
Please add a detailed FPGA block diagram showing: - Top-level module (drum_trigger_top) - Arduino SPI slave module (arduino_spi_slave) - MCU SPI slave module (spi_slave_mcu) - Internal data paths and buffers - Control signals and state machines - Clock domains
Recommended Image Specifications: - Format: PNG or SVG - Size: 1200px width minimum - Location: Save to Images/fpga-block-diagram.png - Show module hierarchy and interconnections
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{width="100%" alt="FPGA internal architecture showing SPI slave modules and data flow"}MCU Interface Diagram
TODO: Add MCU interface diagram
Please add a diagram showing: - STM32L432KC pin connections - SPI1 interface pins (PB3=SCK, PB5=MOSI, PB4=MISO, PA11=NSS) - Connection to FPGA - Power and ground connections - Any other peripheral connections
Recommended Image Specifications: - Format: PNG or SVG - Size: 1000px width minimum - Location: Save to Images/mcu-interface-diagram.png - Label all pins and their functions
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{width="100%" alt="STM32 MCU pin connections and SPI interface"}Arduino Sensor Interface
TODO: Add Arduino sensor interface diagram
Please add a diagram showing: - Arduino/ESP32 connections - BNO085 sensor I2C interface (SDA, SCL) - Power connections (3.3V, GND) - SPI interface to FPGA (SCK, MOSI, CS) - Pin assignments
Recommended Image Specifications: - Format: PNG or SVG - Size: 1000px width minimum - Location: Save to Images/arduino-sensor-interface.png - Show both I2C (sensor) and SPI (FPGA) connections
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{width="100%" alt="Arduino connections to BNO085 sensor and FPGA"}Pin Connection Diagram
TODO: Add complete pin connection diagram
Please add a comprehensive pin connection diagram showing: - All interconnections between Arduino, FPGA, and MCU - Signal names and pin numbers - Power and ground distribution - Any pull-up/pull-down resistors - Clock signals
Recommended Image Specifications: - Format: PNG or SVG - Size: 1400px width minimum - Location: Save to Images/pin-connections.png - Use color coding for different signal types (power, ground, SPI, I2C, etc.)
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{width="100%" alt="Complete pin connection diagram for all components"}SPI Protocol Timing Diagram
TODO: Add SPI timing diagram
Please add a timing diagram showing: - SPI Mode 0 timing (CPOL=0, CPHA=0) - CS, SCK, MOSI, MISO waveforms - Data bit timing - Transaction boundaries - Example packet transmission
Recommended Image Specifications: - Format: PNG or SVG - Size: 1200px width minimum - Location: Save to Images/spi-timing-diagram.png - Show clock edges and data sampling points
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{width="100%" alt="SPI Mode 0 timing diagram showing clock and data signals"}Adding Your Diagrams
Instructions for Adding Diagrams
Create your diagrams using your preferred tool (KiCad, Fritzing, draw.io, etc.)
Export as PNG or SVG with appropriate resolution (minimum 1000px width)
Save to the
Images/directory with descriptive filenamesUpdate this page by replacing the placeholder sections above with:
{width="100%" alt="Description"}
Recommended Tools
- Block Diagrams: draw.io, Lucidchart, or similar
- Schematic Diagrams: KiCad, Fritzing, or Eagle
- Timing Diagrams: WaveDrom, draw.io, or similar
- Pin Diagrams: Fritzing, KiCad, or manual drawing tools
Image Format Guidelines
- Format: PNG (for photos/screenshots) or SVG (for diagrams)
- Resolution: Minimum 1000px width, 300 DPI recommended
- File Size: Optimize images to keep page load times reasonable
- Naming: Use descriptive, lowercase filenames with hyphens (e.g.,
system-block-diagram.png)